Tracking issue: deprecated features #2176
Description
This is a tracking issue for various deprecated features, which should be added as sub-issues for visibility. At this time, many (not all) are attached to a 2.14 cleanup milestone.
In general, these changes should be made in the 2.14.0 release, not before, which means even if staged their PRs should be held until 2.14.0 is being staged, to avoid inadvertently introducing a breaking change in 2.13.x
Tracking PR: #2329